Dedicated online photometer for water and wastewater analysis

ICON Analyzer

02 If there is one thing that everybody depends on, it is

water. We drink it every day. We use it in nearly every

industry as a cleaning agent, to moderate processes, or

actually as a solvent in production. And once we have

used it, it is discharged into the environment again.

Therefore, it is of the utmost im portance to society to

monitor water quality.

Plug and analyze

Given the universal necessity and importance of water,

any serious technical solution to monitor its quality should

be easy to use, reliable, and of course, sensitive enough

and highly accurate. These are in fact the features and

benefits that the ICON Analyzer from Metrohm Process

Analytics provides. The new ICON Analyzer was devel-

oped specifically for the near-continuous analysis of a

large number of parameters critical for water quality.

• Very easy to use:

Just connect the power, sample, and reagent lines

and the ICON Analyzer is fully operational.

• Superior reliability:

Validation, cleaning and calibration are standard

features which significantly reduce downtime and

operator intervention.

• Outstanding sensitivity & accuracy:

Depending on the analyte and matrix, the deter-

mination ranges of the ICON Analyzer vary from

trace µg/L to mg/L.

• Secure:

The electronics part is 100% separated from the wet

part of the analyzer.

The ICON Analyzer is dedicated for the analysis of water and wastewater, and can be used in various situations: • Wastewater effluent

• Surface water

• Drinking water

• Ultrapure water

• Steam and condensate water

• Ion-exchange systems

• Boiler feed water

• Demineralizers

Straightforward online water monitoring

03

For more accuracy, the ICON Analyzer measures twice during one analysis cycle:

Colorimetric method

The first measurement is from the raw sample as a refer-

ence, which compensates for the color and turbidity of

the sample and the fouling of the cell. The second mea-

surement of the sample is taken after the addition of

color reagent and completion of the reaction. Based on

the calibration and the differential absorbance, the soft-

ware calculates the analyte concentration.

The ICON Analyzer can measure a variety of components

in water. All applications have been field-tested and have

an excellent analytical performance.

Some common analytes monitored for water quality control:

• Aluminum • Ammonia • Chlorine • Chromium • Copper

• Cyanide • Hydrazine • Iron • Manganese • Nickel • Nitrate

• Nitrite

• Phenol

• Phosphate

• Silica • Zinc

• And many more

04

Examples of proven applications

SilicaPhotometric determination of silica

Application fields

Cooling water, high-pressure boiler feed, high-

purity water

Silica is used in a variety of industries: from the produc-

tion of wafers to glass and ceramics manufacturing and

chemical production. In the water-steam cycle of power

plants, silica is considered one of the major im purities,

causing boiler scale and deposits on steam turbine

blades. Impurities precipitated out of the water form de -

posits on heat transfer surfaces, which result in re duced

boiler efficiency, overheating, and eventually out ages.

Silica also plays an important process control role at dem-

ineralization plants where deionized water is produced.

An increase in the silica concentration signals an exhaust-

ed ion-exchange bed and is therefore an indicator that

regeneration is necessary.

IronPhotometric determination of iron(II) and (III)

Application fields

Drinking water, surface water, industrial waste-

water, cooling water, high-pressure boiler feed

Iron is quite abundant naturally in our environment; it is

also used in many different applications and industries

worldwide. Soluble Fe(II) is present in anaerobic water,

oxi dizing to Fe(III) when exposed to air or other oxidizing

agents. The resulting turbidity from less-soluble Fe(III) can

cause problems. In drinking water, an excessive presence

of iron is a problem, as it affects both the taste and smell.

There are many ways for iron in all forms to be intro-

duced into our water sources, ma k ing it an important

analyte to measure.

Metrohm Process Analytics has your analysis covered, whe ther you are measuring industrial waste or

high-purity water. We have many Process Application Notes (PAN) and Application Data Sheets (ADS)

available for more information.

05

PhosphatePhotometric determination of phosphate

Application fields

Surface water, municipal waste, industrial waste-

water, cooling water, high pressure boiler feed

Phosphorus compounds are essential to the growth of

plant life and other organisms. However, the increasing

concentrations of these compounds from wastewater

and agricultural runoff create nutrient imbalances in

lakes and other areas. This imbalance promotes an in -

crease in algal blooms which can eventually lead to total

oxygen depletion (anoxia), resulting in the death of fish

and other aquatic animals. Phosphates can be introdu-

ced to the environment via agricultural (fertilizer) runoff

resulting from rain storms or snow melt. Other waste-

waters may also contain higher concentrations of phos-

phates, introduced by detergents and other cleaning

solutions. Boiler water is frequently treated with phos-

phates to prevent boiler scaling leading to premature

boiler failure.

AmmoniaPhotometric determination of ammonia

Application fields

Cooling water, surface water, municipal waste-

water, industrial wastewater

Ammonia can come from a variety of sources, with agri-

culture and wastewater treatment among the largest pro-

ducers. Ammonia is used as a precursor to create many

fertilizers. High concentrations of ammonia or am mo nium

salts are present (depending on the type of fertilizer in

use) which contribute nitrogen to the environmental

nutri ent balance, promoting plant growth. Nitrogen is a

limiting nutrient in marine environments, thus its increase

due to agricultural runoff or from im properly treated

waste water can create significant ecological imbalances

and anoxia, similar to the environmen tal effect of excess

phosphates. Nitrification converts ammonium into nitrite

and nit rate. Com pounds are typically added to fertilizers

to stop this process because nitrite and nit rate are much

more water-soluble and contaminate water sources.

Wastewater treatment uses both nitrification and denitri-

fication processes to convert ammonium into harmless

nitrogen gas, which is then released into the atmosphere. Other examples available:Aluminum, chlorine, chromium, copper, cyanide,

hydrazine, manganese, nickel, nitrate, nitrite,

phenol, zinc

06

Flexible software for straightforward control

The ICON Analyzer is equipped with a graphical user

interface for easy access to your analyses and results.

There are multiple user levels offered in the software

which are suitable for any operator. With up to 30 pro-

grammable steps available for each analysis, the ICON

offers more than enough flexibility to adjust to the needs

of any user.

Validation, cleaning, and calibration are standard fea-

tures built in to the analyzer which assist in the optimiza-

tion of the system and help ensure the most accurate

results are obtained. A graphical overview of the most

im portant data from your application is available at your

fingertips.

Not only will analysis results be logged into the database,

alarms can also be managed. For example, an alarm for

low reagent levels can appear in the graphical user inter-

face, sent to a control room for further review by the

operator, and it can also be logged in the database.

Main analysis screen

Alarm notification

Results table

Application method

Method-building choices

Event log

07The ICON Analyzer is complete, preconfigured and pro-

grammed for your specific application. Just connect the

power, sample, and reagent lines and the easy-to-use

analyzer is fully operational. The high uptimes and mi ni -

mal maintenance of the ICON Analyzer lead to lower

operating costs. The ICON Analyzer as designed ensures

the highest level of robustness in the electronics, mechan-

ics, and hydraulics components.

Simplified layout for easy access

• Dual compartment enclosure to ensure complete separation between the electronics and the wet part, therefore no leakages possible into the electronics part

• Color touchscreen interface; simple and user-friendly menus and functions

• Multiple user levels

• 3 programmable cycles, with 30 programmable steps per cycle for analysis flexibility • Long-life LED light source

• Built-in peristaltic pump for sampling

• Thermostated reaction cell

• Automatic validation and automatic cleaning

• 2 sample streams can be monitored • Up to 3 reagents can be added – simply add a pump for additional reagents, as shown

below:

Features

Layout of the wet part of the ICON Analyzer for the addition of 1, 2, and 3 reagents.

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Technical specifications

Small dimensions 380 × 210 × 600 mm

Analysis method Differential photometric absorbance

Analysis frequency Freely programmable, near-continuous analysis

Installation Wall mount or bench top support

Ingress Protection IP54

User adminstration Password protected input on 2 levels

Digital inputs online on/off, remote start/stop, sample override, etc.

Digital outputs Analyzer on, online fault alarm, no sample flow 1 and 2, low reagent level alarm,

calibration error, validation error, result alarm, etc.

Analog outputs 2 analog outputs, 4–20 mA

Serial interface RS232 MODBUS Protocol

Data logger For alarms and results, integrated with USB download function